16．阅读下面短文，从各题所给的A、B、C、D四个选项中选出能演人文章中相应空白处的最佳答案。
　　Shadow is my pet dog. He is small and black. But that's not all. My dog has something (1)      . He has white socks. Ha!Ha!Of course, they are not real ones, they are his white feet. We gave him the name of Shadow (2)       he is black as a shadow (影子).
　　When shadow got bigger, my mom started to call him (3)      . I'm not sure if Shadow likes it, but he moves his head when Mom says"Trouble'".
　　(4)      , my dog doesn't give me any trouble (麻烦) at all. When I go outside, he usually follows (5)      . He usually sits next to me quietly when I watch TV. I don't (6)       why Mom calls him Trouble.
　　One day, I said, "Mom, I'll go to walk Shadow." "(7)      ," said my mom, "it is my turn to walk Trouble. "Look! Mom really (8)      Shadow, but she still calls him Trouble.
　　Another day, my mom wanted to go outside to drink her (9)      . She looked at Shadow and said, "Come on, Trouble, let's go outside for tea." Shadow moved his head and (10)       her outside. Look!Shadow is not any trouble at all.

17．　　Lots of families in England have one or two pets (宠物). Dogs are their favorite pets and there are about 6,000,000 of them in England. The second favorite animals are cats (about 5,000,000). And other kinds of animals are about 1,000,000.
　　Some families do not keep cats or dogs. They keep other animals as pets in their homes.
　　The English people take care of their pets. They give them nice names:Rover, Rex, Cindy, or Misty for dogs;Albert, Snowy, Fluffy or Tom for cats;Guy, Scamper or Shipley for monkeys.
　　When they speak of their pets, they say "He", "She", not "It".
　　The English people give their pets nice food to eat. They buy food for their pets in pet shops. The English people are pet lovers.

18．　　Today it is found that school students hardly pay much attention (注意) to sports. Is it because they aren't interested in sports? No. They often say they have other more important things to do.
　　What are these important things? Exams! They have to spend much time on all kinds of exams at school. So many of them almost become bookworms (书虫). Books stop then from going in for sports. Because of the pressure from their parents and teachers, the students have to work harder and spend most of their time on books. As for the students, they also want to get good grades. So it is necessary for them to give all of their free time to their studies and stop their school sports.
　　In fact, education can't go without physical exercises, because a quick mind hardly goes along with a weak (点弱的) body. If you don't have a healthy body, you can never get anything let alone (更不用说) a great success in your life.

19．　　Cellphones help us easily find people anywhere at any time. However, using cellphones too often may cause cancer (癌症). It's reported that people who used a cellphone for 10 years or more were more likely to get brain cancer.
　　The suggestions below may tell you how to use cellphones properly (怡当地) and help your reduce the risk (风险) of cancer.
　　When using your cellphone, try to keep it away from your body as much as possible. Don't put it under your pillow(枕头)or on a bedside table when you sleep.
　　When you're on the cellphone, use the speaker. Try to keep your conversations short, If you need to talk longer, use an ordinary (普通的) phone instead.
　　Change ears when you're using your cellphone. Before putting it to your ear, wait until the person you are calling picks up the phone.
　　Your phone gives out radiation(辐射)when you talk or text, but not when you're listening or getting messages. Listening more and talking less can lower (降低) the risk of cancer.
　　Do not use your cellphone when the signal (信号) is weak or when moving at a high speed, for example in a car or train. At high speeds your phone is trying to pick up signals, and this increases the radiation it gives out.
(1)题完成句子；(2)题写出"it"所指代的内容；(3)题简略回答问题；(4)题概括全文的主要内容；(5)题将划线句子翻译成汉语。